Clutch



Aug. 30, 1932 G. w. swim, .1R mmssf cLUTcH l.

Filed Magch 5. 1950 5 Sheets-Sheet 1l 31A/Dammi Aug 30, 1932., G. wswaF-r. MR 557455l CLUTCH Filed March 5, 195o 5 sheets-sheet 2 WITNESSAug- 30, 1932 G. w. swlF'r, JR 1,874,651

CLUTCH Filed March 5, 1930 5 Sheets-Sheet 3 Aug'. 30, 1932.

I aw. swx'F-r, JR

5 SheetsfSheet- 4 WIT/V555 VEN 70K wwf/7 .f/E.

Aug. 30, 1932. G. w. swlF-r, JR 1,874,651

CLUTCH Filed March 5, 1930 5 Sheets-Sheet 5 Z7 vwemtoz 650/665 mw/Fr/J@im I 'I Patented Aug. 30, 1932 UNITED sT-ATgES PATENT OFFlCE GFOBGEV-W.SVS/TFT, JR., F -BORDENTOWN, JERSEY, ASSIGNOR TO GEORGE W.

SWIFT, JR., INC., OF `IBORDENTOWN,v NEW'JERSEYi A CORPORATION OF`NEWJERSEY CLUTCH Application led` March 5,

`This invention relates more especially to clutches for automaticallycontrolling the operations of amachine in which the proper timingoffsaid operations affects the character of the'work produced bysaidmachine.

The primary object of my invention` is to provide an improved`-`construction. and arrangement of parts in a clutch of this naturewhereby a. periodically operated mechanism may be ystartedY and stoppedin accuratelyT timed relation to the'feed or travel of 'the stock ormaterial which isbeing operated upon. In the form shown on theaccompanying drawings, my invention contemplates` an improved clutch fortiming the periodic operations ofV rotary knives for cutting specifiedlengths of materialfrom a web.

Further objects of my invention will appear in the specification and theparticular features of construction appert/aining thereto will berecited in the appended claims, reference being had to the accompanyingvdrawings which show a preferred embodiment of my invention.

Figure 1 is. a side elevation of a lweb-'cutting mechanism providedwithV my improved clutch.

Figure 2 is a. horizontal section corresponding to the line 2-2 ofFigure i1, parts being shown in plan.

Figure 3 is a vertical section corresponding to the line 3 3 of Figure2, parts being broken away and parts shown'in plan.

Figure 4 is a front elevation of the clutch and connected parts.

` Figure 5 is a section on the line 5-5 of Figure 2 showing the parts intheir relative positions at the commencement of the clutchreleasingoperation.

Figure 6 is a front elevation of the same.

Figure -7 is a section similar to Figure 5 showing the parts in theirrelative arrangements in a more advanced stage of the clutchreleasingoperation.

Figure 8 is a front elevation of-the'same.

Figure 9 is asection similar to Figure 5 showing the relativearrangements of the parts vat thek completion of the clutch-releasingoperation.

Figure 10 is a front elevation of the same.

1930. Serial No. 433,259.

Figure 11 is a vertical section on the line 11-f11 of Figure 10.

Figure 12 is a fragmentary section on an enlarged scale corresponding tothe line 12-12 of Figure 6.

Figure 13 is a similar fragmentary section corresponding to the linek13-13 of Figure 10.

Figure 14 is a fragmentary section corresponding to the line 14-14 ofFigure 12.

`Figure 15 is a vertical section on thevline G0 15-15 of Figure 2.

Figure 16 is a vertical sectionsimilarI to Figure 15 with the parts inchanged positions.

Figure 1 of the drawings shows in side 65 elevation a web-cuttingmachine for corrugatedboards or the like in which my improved clutch ismade use of for accurately' starting and stopping the web-cuttingmechanism for the purpose of severing predeter- 7@ mined lengths ofmaterial from a cont-inuous web of the corrugated board.

Referring to Figure 1 of the drawings, oppositelyk arranged side frames1 (only `one of which is shown) carry coaXially-arranged bearingbrackets 2 (only one of which'is shown). Journalled in said bearingbracketsy 2 is a power-driven shaft 3 to which is keyed a spur gear 4which meshes with a larger spur gear 5. The spur gear 5 is 30 keyed to atransverse shaft 6 which also carries a spur gear 7 meshing with a spurgear 8 keyed to a cross-shaft 9. Mounted upon the side frames 1 areoppositely-ar ranged standards 10 within which are journalled pairedweb-feeding rolls carried respectively by a lower feed roll shaft 11 andan upper feed roll shaft 12.' The spur gear Smeshes into a spur gear 13which is keyed 90 to the lower feed roll shaft 11. In order to have theupper and lower feed roll shafts 11 and 12 rotate in unison, suitableintermeshing spur gears 13 and 14 are keyed to said shafts and areadapted to produce a forward movement of the web at a. predeterminedspeed consistent with the desired length of web-sections to be severedfrom the continuous web 15 by periodic operations of the cuttingmechanism.

Clutch mechanism Referring more especially to Figures` 1, 2 and 3, thespur gear 8 on transverse shaft 9 meshes with a spur gear 16 which,according to the present embodiment of my inveiition as shown in Figure3 of the drawings, is integrally formed with an elongated sleeve 17freely journalled upon a lower cutterv shaft 18. Arrangedy at theopposite end of elongated sleeve 17 with respect to the gear` 16 andpreferably integial with said sleeve,

is a clutch-disk 19. Journalled upon the;y

. a way that a relative angular movement between themv produces arelative axialmovement whereby ythe clutcli-disk 19 and clutchring 20may be thrown into and `Vout of clutching engagement. For this purpose,these parts are connected by inextensiblc links 23 which have theiropposite ends pivotally connected to the parts 20 and 22 by means ofstuds or lpins 24. It will be understood from this description thatwhenever tlie clutch-ring 20 is oscillated on the sleeve 17, it will bemoved into and outof engagement with the clutch-disk 19 `by reason ofchanges in the inclination of links 23. Suitable means for yieldablydrawing the clutch-ring 20 into engagementy with the clutch-disk 19 maybe provided by tension springs 25 secured at opposite ends to therespective parts of the two-part driven clutch member by means of studs26. By an inspection of Figures 3, 15 and 16, it will be understood`that the part 22 of the twopart driven clutch member is connected tothe lower cutter shaft 18 by a limited lostmovenient friction drive andbrake.

As shown in Figures 1 and 3, the driven part 22 of the two-part drivenyclutch-member is rovided with a peripheral enlargement 2' within thelateral wall of which is formed an arcuate recess 28. Movable to and frowithin the arcuate recess 28 and adapted to abut rigidly against one orthe other end walls of said arcuate recess, is a lug 29 which projectslateially from a friction driven or brake member 30 which is keyed tothe shaft 18 by means kof a key '31.

Saidfriction driven or brake member 30 may be retained in axiallyadjusted position by means of suitable grubs 31 and comprises oppositelydisposed lobes 30al and 306 of spiral form. Bearing inwardly on thelobes 30a and 301i through interposed straps or shoes 32, arepart-circular straps or brake bands 33 with outwardly-deflected ends 34.

' One end of each of said stra s or brake bands ycompression spring 37applied by an adjustable abutment or nut 38 threaded to the outer end ofthe stud 36. As shown in -Figure 3, a spur gear 39 is secured to thelower cutter shaft 18 by means of a key 4() and mesli'eswith aiiothorspur gear 41 which is keyed vto anupper ycutter shaft 42.`

Suitable means for locking the clutch-ring 20 inclutch with theclutch-disk 19 under control ofthe starting and stopping move` ments ofthe .web-cutting mechanism, may be provided as follows. As shown inFigures 6, 12 and 13, the' clutch-rin 20-v carries on its outerperiphery a latch ar 43, said latch bar being rigidly secured totheclutch rin by means of bolts 44. The ysmaller outer en ofl said latchbar is provided with an inwardly-presented lugr or Vdeflected end whichis moved into and outfof thepath of a stop 46 carried by an arcuatelatch ring 47 which is mounted'within a suitable arcuate recess 48formed inftlie enlargement 27 of the block 22 as shown inv Figure 11.The arcuate latch Yplate is provided with arcuate slots 49 which serveas guidesfor the oscillatory movement of said latch plate on studsvwhich project through the slots 49. rA yieldable tendency to move thearcuate latchplate 47 .in a clockwise direction according to Figure 11,may be provided by a tension spring 51 which is secured at oneend to astud 52 on the latch y plate 47 and at its'other end to alaterallypresented stud 53 carried by they enlargement 27'of the part 22of said two-part driven clutch member. It will be understood thatwhenever the clutch-ring 20 is thrown into clutching engagement with theclutch-disk 19 by the angular movement of said clutchring, the latch bar43 is moved toward the right according to Figures 6, 12 and 1 3. Thismovement from its position shown in Figure 13 toits position shown inFigure 12, removes tlie inwardly-presented lug 45 on the end of thelocking bar 43 from the path of lug 46 on the latch plate 47. Thispermits the tension spring 51 to draw the latch plate in a clockwisedirection according to Figure11 in such away that the stop 46 on saidlatch plate is caused to bar the return move'- inent of thelocking bar43. This operation is thus adapted :to maintain aV positive interlockbetween the clutch elements until a reverse movement lof thearcuatelat/ch kplate 47- is produced in thefmanner now to be pointedout. As shown best in Figures 5, 7 and 9, the clutch-ring 20is providedwith an approximately radial projection` 20a. The part 22 of thetwo-part ydriven clutch member, on theother hand, is provided with anapproximately radialprojectionv 22a. The arcuate latch plate47-isvprovided with an approximately radial projection 47a. Each ofthese projecting portions 20a, 22a, and 47a of the members referred tois suitably formed to abut radially against an anvil 54 which, as shownin Figure 4 is mounted on the upper en d fof an oscillatory arm 81 andmovable about the axis of a short shaft 82. Suitable` means may beprovided, as hereinafter described, for moving said anvil into and outof the paths of these projections for timing the operations of theweb-cutting mechanism. Thevshaft .82 is mounted in suitable uprights 83and 84 carried by a bracketl 85 mounted on the main frame of themachine. It will be seen in Figure 5 that whenever theclutchrip-ng 2O isin clutch with the clutch-disk 19 as shown inr Figure 6, thatvthera-dial abutment surfaces of the projections 20a, 22m and 47a. arearranged out of alinement with respect to the uppersurface of the anvil54. OnV the other hand, when saidprojections are brought to rest andinto.alinement upon the upper surface of the anvil 54 as shown in FiOure 9,the relative-displacement ofthe clutch-ring 2O with respect to the Jpart22 of the two-part driven clutch member separates the clutch-ring 2Ofrom the clutch-disk 19 under the constraint ofthe connecting links 23as they move toward parallelism.

@latch-controlling mechanism Suitable mechanism forcooperativelycontrolling these members for making and breaking the clutch and thusaccurately timing the starting and stopping ofv the web-cuttingmechanism may be provided as follows. yReferring to Figures 1 and 2, asprocket-wheel 55 which is keyed to the cross-shaft 9, drives asprocket-chain 56 which sprocket-chain also passes over a sprocket-wheel57 on a transverse shaft 58. `Also `secured to the transverse shaft 58and spaced .axially from theVsprocket-wheel 57, is a secondsprocketwheel 59 which drives a sprocket-chain 60 which runs over anupper sprocket-wheel 61 on a'cam-shaft 62. Keyed to the outer end ofcam-shaft 62 is a cam-disk 68 which is provided with alaterally-presented camgroove 64. Travelling in the cam-groove 64 is acam-roller 65 which is journalled on a stud 66 on the inner face of acam-rod 67, said cam-rod being provided in its outer end with a guideslot 68 which oscillatably engages the shaft 62. The inner end of thecam-rod 67 is pivotally connected to one end of aistud 69 which iscarried by a lug 70 which is-presented rearwardly from theanvil 54. l Itwill be understood from this description that during the continuedyoperation of the web-cutting: machinerthe anvil 54 will beperiodicallyv moved into and out of thepaths of the projections 20a, 22aand 47 a for periodically starting and stopping the web-cuttingmechanism. A Suitable means for preventing arebound ofthe clutch-member22 after each operation may be provided as follows. As

shown in Figures 1 and 11, the peripheral eni largement 27 of theintermediate clutch member `22 carries an arcuate strap 71 provided atVits lower end with a latch dog 72. Cooperating with the latch-clog 72 isa latch-arm 73, said latch-arm being pivoted at 74 on `au oscillatoryarm 81 which carries the stop or anvilx54. For this purpose,fsa1d`latch-arm is provided above with a claw 75 which snaps into engagementwith the dog 72 as the projection 22a strikes the anvil each time. Asshown in Figure 1, a tension spring 76 is connected at one end to adepending portion of the latch-arm, the other end of said spring beingconnected at 78-to a'bent bracket arm 79fwhich is secured to arearwardly projecting llug- 8O on the `oscillatory arm 81. The clockwisemovement of the latch-arm 73 may be limited by an adjustable stop 735 onthe outer rend of a bar 7 8c carried` bythe oscillatory arm 81.

Operation beheld in its rearmost angular position with il:

respect to clutch-part22'inspite of the pull exerted by tensionsprings25. Under these conditions, the connecting links 23 are in theirkvpositions nearest to parallelisinwith respect to the aXis of lowercutter-shaft 18. In consequence, the clutch-ring 2O is retained in aposition in which it is axially displaced from the clutch disk 1.9,thuspermitting the spurgear 16, sleeve 17, and said clutch-disk 19 to rotatefreely on the shaft 18. According to Figure 2 of the drawings, the anvil54 has just been withdrawn from the circular path of the projections20a, 22a, and 47a, the clutch-ring 2O being thus released for a forwardangular movement relatively to the clutch-part 22 under the tension ofsprings 25. Un der this movement, the increasing angnlarity of theconnecting links 23, cause an axial'movement of the clutch-ring 2O intoclutch with theclutch-disk. As shown clear- V1y infFigures 10, 12 and13, the locking bar 43 which is bolted to the clutch-ring 20, vis movedvtoward the right according to these figures so that theinwardly-presented lug 45 carried thereby is moved out of the path ofthe stop 46 on the arcuate latch-plate 47 which is thus released and isimmediately shifted by tension spring 51 from its position shown .inFigure to its position shown in Figure 5. By this shift of the arcuatelatch-plate 47, the stop 46 is placed in a position to block the returnmovement of lug 45 and locking bar 43 until suchV time as theprojections 20a, 22a, and 47a are again intercepted and brought i intoalinement by they anvil 54. f As the continuously rotating clutch-diskbecomes interlocked with the clutch-ring and clutchpart 22, thelowercutter-shaft 18 is at first accelerated under the yieldable frictiondrive exerted `through the spring-inessed straps B3 operating on thefriction drum during the movement of the driven segmentallugv 29 fromvits central position in the arcuate slot 28 as shown in Figure 16 to theend of said yarcuate slot as shown in Figure V15 after which theperipheral enlargement 27 of the clutch-part 22 exerts a rigidy driveupon the lower cutter-shaft 18.

' In the relative positions of the several parts shown in Figures 5 and6, the rotary cutters mounted on the upper and lower cutter shafts 42andlS have completed their cutting .operation and the clutch is abouttov be released for bringing the cutter shafts to rest. Thus,

according to Figure 5, the latch plate 47 j disengage it from theclutch-disk 19.

which is in locking position with respect to the latch bar 43 hasreached a. point in its rotation at which the proiection 47a has comeinto engagement with the anvil 54. It will be seen,` therefore, that asthe lower cutter shaft continues to rotate, the latch plate 47 willfirst occupy the position shown in lFigure 7, in which position thelocking lug 46 has been removed from the path. of the lug and thusreleases the locking bar 43. 'At about the same time,'the projection 20aon the clutch kring 20 has come into engagement with the anvil 54 sothat by the time thatthe projection 22a has come into engagement withthe M ranvil 54, the clutch ring 2O has been moved l mately centralposition therein as shown in dii Figure 16. The parts are nowarranged'in their initial positions in readiness for another cycle ofmovements as described above.

I claim 1.v In a clutch, the combination with driving and drivenclutch-members provided with stop mechanism for normally holding saidclutch members out of clutch, of latching mechanism under the control ofsaid stop mechanism for locking said clutch-members f together inclutched relaton, said latching mechanism comprising a latch-bar mountedi on one clutch-member part, and a latch-plate movable on anotherclutch-member pai't by said stop mechanism.

y2. In a clutch, the combination with driving and driven clutch-members,one of said clutch members comprising parts, one of which is'movableaxially into and out ofengagement with the other o f saidclutch-inembers,A means for controlling the engagement and disengagementof said 'clutch-members, a locking bar carried by said axially movableclutch-part,v and a latch-plate movable on the other of saidclutch-'parts into and out of locking engagement with said locking'A barunder the control of said controlling means. j

3. lIn a device of the character described, the combination with aclutch-disk, of a clutch-ringmovable axially into and out of iengagement withsaid clutch-disk, a clutchpart rotatable with and movableangularly with respect to said clutch-ring, rsaid clutchdisk beinginterposed between saidfclutcl ring and clutch-part, a latch-bar carriedby and presented axially from said clutch-ring across said clutch-diskand clutch-part,A a latch-plate movable on said clutch-part into andoutof interlocking connection with said latch-bar, said latch-platebeing provided V with a radial projection, and astop movable into andout of the path of said radial projection. y v

4. In a periodically operated clutch, the combination with aclutch-disk, of a clutchmember comprising axially-spaced parts, one ofsaid parts being adapted to be moved into and out of engagement withsaid clutch-disk, a latch-bar carried by one of said axiallyioo spacedparts, arcuate latch-plate movable on the other of said axially-spacedparts into and out of interlocking engagement with said latch-bar forholding said one of the axially-spaced parts in engagement with saidclutch-disk, means for yieldably holding said arcuate latch-plate ininterlocking position with respect to said latch-bar, and a stop movableinto and out of the rotary path of said latch-plate..

5. In a periodically operated clutch, the combination with aclutch-member comprising two axially-spaced parts, of a clutchmemberinterposed between said axiallyspaced parts, said axially-spaced rpartsbeing adapted to engage and disengage'said interposed clutch-member, alatch-bar rigidly mounted on and projecting axially from one of saidclutch-member parts across the interposed clutch-member and the other otsaid clutch-member parts, an arcuate latch-plate movable on said otherof the clutch-inember parts into and out of interlocking engagement withsaid latch-bar, means Jfor yieldably holding said arcuate latch-plate ininterlocking position with respect to said latch-bar, said arcuatelatch-plate being provided with a radial projection, and a stop movableinto and out of the rotary path of said radial projection.

6. vIn a periodically operated clutch, the combination of aclutch-member comprising two axially-spaced parts adapted to engage anddisengage an interposed clutch-member, an interposed clutch-memberarranged between said axially-spaced parts for this purpose, a latch-barrigidly mounted on one of said clutch-member parts, an arcuatelatchplate movable on the other of said clutchmember parts into and outof interlocking engagement with said latch-bar, said arcuate plate andlatch-bar being provided with lugs adapted to interengage for holdingsaid axially-spaced parts of the irst-mentioned clutch-member inclutching engagement with said interposed clutch-member, means foryieldably holding said arcuate latch-plate in interlocking position withrespect to said latch-bar, and stop mechanism normally holding saidarcuate plate in release position.

7. ln a periodically7 operated clutch, the combination ot aclutch-member comprising tivo axially-spaced parts adapted to engage anddisengage an interposed clutch-member, a clutch-member interposedbetween said axially-spaced parts, a latch-bar rigidly mounted on andprojecting axially from one of said clutch-member parts, the other ot"said clutch-member parts being provided with an arcuate recess in aplane transverse to the axis ot said cluutch-members an arcuatelatch-plate movable endwise in said arcuate recess into and out ofinterlocking engagement with said latch-bar, and means for releasablyholding said arcuate latch-plate in interlocking position with respectto said latch-bar.

8. ln a periodically operated clutch, the combination with aclutch-member comprising two axially-spaced parts, ot a clutchmemberinterposed between said axiallyspaced parts and adapted to be engagedthereby, a latch-bar rigidly mounted on and projecting axially from oneof said clutchmember parts, the other of said clutch-meniber parts beingprovided with an arcuate recess in a plane transverse to the axis ofsaid clutch-members, an arcuate latch-plate movable endwise in saidarcuate recess, said arcuate plate and latch-bar being provided withlugs adapted to interengage for holding said axially-spaced parts of thefirst-mentioned clutch-member in clutching engagement with saidinterposed clutch-member, means for yieldably holding said arcuatelatch-plate in interlocking position with respect to said latch-bar,said arcuate latch-plate being provided vvith a radial projection, and astop movable into and out of the rotary path of said radial projection.

9. In a clutch, the combination with driving and driven clutch-members,of means for imparting relative angular and axial movements to saidclutch-members for throwing one of said clutch-members into and out ofclutching engagement with the other, and means under the control of therst said means for latching said clutch-members together againstrelative axial movement at the end of their clutch-engaging movement andfor releasing said clutch-members at the beginning of theirdeclutchingmovement, said latching means comprising interlocking partsmovable axially and angularly with respect to each other.

l0. In a clutch, the combination with the axially-spaced parts of atwo-part clutchmember, of a clutch-disk interposed between saidaxially-spaced parts, one of said axiallyspaced parts being adapted byrelative axial movements with respect to the other of said parts toengage and disengage said interposed clutch-disk, and a latch comprisingmembers mounted respectively on the parts of said two-part clutch-memberand adapted by relative axial and angular movements to interlock forholding said parts of the twopart clutch-member against relative axialmovement.

1l. ln a clutch, the combination with a two-part clutch-member, of alatch-bar mounted on one of said parts of the two-part clutch-member, alatch-plate movable on the other of said parts of the two-partclutchmember, and a clutch-disk interposed between said clutch-memberparts, one of said clutch-member parts being movable into and out ofclutching engagement with said interposed clutch-disk, said latch-barand latchplate being adapted to releasably interlock in the clutchedposition or" said clutch-member parts with respect to said interposedclutchdisk.

GEORGE W. SVJIFT, JR.

